Cylinder



Sept. 12, y E I CYLINDER I Filed March 17, 1951 INVENTOR, 'B Z ah/Tldkn "H15 ATTORNEY Jami lfltalph 'ller,

= l Q YLIN R Easton, Pal, assigniorlto Ingersoll- Rand (lompanm Jersey City, N. J., acorpor'a-I ,tion of NewJersey i Application 'Ma rchl'l, 1931; Sultana/523,229 -111 [5 cla ms. "(Cl.:; 12 3 1 73) w This invention relates tofenginea but more particularly "to a cylinderjfonengines' employing.

water jacketsas a' means for maintaining the temperature of the cylinder" at apractical value.

, "One object of the invention isto assure proper,

temperature'of the cylinder.

[Anot' er object is to maintain the weight of the cylinder at a minimum. e

Other objects are'toenable the vuse of tubing for the cylinder and'to avoid the subjection of the water jacket to stresses incident, to ejxpan sion and-contraction of the cylinder in a longitudinal direction, i a g H g Otherfobjects will be in part obvious and in part pointed out hereinafter.. Y

The accompanying drawing forming part of the specification is a sectional elevation of somuch of an engineas will serve to invention. I

Referring more particularly to the drawing, A designates generally an engine comprising a base or bed plate B, a cylinderCsupported by the illustrate the bed plate B, and a head D seated on the end of injected or otherwise introduced, and wherein such fuel may be ignited for actuating a piston G reciprocable within the cylinder C.

lhe cylinder C, constructed in accordance'with the practice of the invention, comprises a tube of which the wall H is of substantially uniform thickness throughout, The upper or outer end of the cylinder C may, howevenbeislightly en- ,larged or upset'tojform thereon a raised portion J and in the periphery of, which are formed with the ,end of the cylinder Qsupports the threads K for cooperation with threads L carried by a lateral flange O, and which flange, together weight of the head ,D. The, said flange 0 may also, as shown, serve as an anchorage-for the bolt E. i V 3 P Near its lowermost end the cylinder C is providedwith a second threaded portion P.'to accommodate a flange Q which acts as a seating surface for the cylinder C, said flange: being seated upon the bed plate B to which it may be secured in any suitable manner, as for instance by bolts R.v

the cylinder and the flanges 0' and Q the said conditionand permitted to' cool in the'assembled elements. p g

Arranged exteriorly of the cylinder C is a position to effect a shrinkagev fit between these Water jacket S'ca'rrying at its upper end a flange 60, p

T through which extend bolts U f o'r securing that end of the water jacket to the flange Q. In'the -opposite end of the water jacket Sis-a bore. V

material W- is disposed in n the water jacket S adjacent the bore'V to assure against leakage of coolingwater from the water jacket'at this, point; In structures wherein the Q- walls of the water jackets are'of extremely small thickness the free or lowermost end of the water jacket maybe additionallyreinforced byshrinking or clamping thereon a band or. ring X. 1

In accordance with'the usual practice, the

water jacket S is provided near its lowermost end, that is, at'a point adjacent the bore V with an r inlet opening Y'through which cooling water may be introduced into the water jacket. At or near the upper-end of the water jacket is an outlet opening Z through which the cooling water ma escape from the water jacket; v In order to assure a desirable turbulence in and a maximum cooling effect of the water during ,whichthe watermay flow from one compartment 7 to another, the passages g and it being preferably 5 located diametrically opposite toeach other.

Inpractice, and with theparts assembled in the manner described, water flowing from the inlet opening Y and to the lowermost compart- V ment d of the water jacket will flow in opposite 1 0 directions around thecylinder C; thence through the passage g intothe compartment e. Therein the water will also flowin opposite directions around the cylinder C but in a direction counter to itscourse through the compartment d. From 9 thecompartment d thewater flows through the 1 passage h'intothe compartment 1 whereinit will In order to assure tight connectionsbetween follow a course similar to that through the compartment' d and will then flow from the water jacket through the outlet opening -Z. During its 3119 course through the water jacket the Water will thus be brought into contact with a large area of the cylinder C and the temperature of the cylinder may therefore'be maintained at a'low value and with the use of a minimumquantity of water.

Constructed as described the cylinder, together'with the Waterjackehmay be of extremely light weight and the cylinder may be constructed of standard tubing of high wear'and strain resisting qualities. Another advantage derived from this mode of construction is that thecylin- .der and the Water jacket may expand in accord-V ance with their respective temperatures without tends and'beingin slidable'vengagement with the cylinder, packing means for preventing leakage of water throughthe bore, and means for secure ing the water jacket to the'other end of the flange. -3. In an engine, a cylinder, upper and lower flanges threaded t0 thecylinder, a bed plate forming a seat for the lower flangev tosupport the cylinder, a water jacket havinga bore in one end to;

slidably receive the cylinder, packing means to to the upper flange.

preventleakage of water between the cooperating sur facesof the bore and the cylinder, and means for securing the other end of the water jacket to the upper flange.

4. In" an engine, a cylinder having external threadedportiens spaced along the length there- ;of, upper and lower flanges threaded on said portions, 'a bed plate forming a' seat 'for'the lower flangeto support the cylinder, a water jacket having a bore in one end to slidably receivethe cylinder, packing means in the water jacket'to prevent leakage of water between the cooperating surfaces'of the boreand the cylinder, and means for securing-the other end of the water jacket '5. 'In an "engine, a cylinder, a water jacket disposedslidably on the cylinder and having inlet and outlet openingsand partition means dividing the water jacket into a plurality of compartments and having passages to conveywater from one compartment to another, the passage inone partition means being staggeredwith respect to the passage in another partition to assure a'spiral movement of the water throughthe water jacket.

6, In an engine, a cylinder having a plurality of threaded portions spaced with respect to each other on the exterior surface of the cylinder; a

flange threadedly connected to one portion, a water jacket disposed about the cylinder, means for securing the water jacketlto the flange, and

ajlarige threaded on; another threaded portion toform a seating surface for the cylinder.

. RALPH MILLER; 

